Revit 2026 API
Compound |
Associates a region with a layer.
Namespace: Autodesk.Revit.DB
Assembly: RevitAPI (in RevitAPI.dll) Version: 26.0.4.0 (26.0.4.0)
Syntax
public void AssociateRegionWithLayer( int regionId, int layerIdx )
Public Sub AssociateRegionWithLayer ( regionId As Integer, layerIdx As Integer )
public: void AssociateRegionWithLayer( int regionId, int layerIdx )
member AssociateRegionWithLayer : regionId : int * layerIdx : int -> unit
Parameters
- regionId Int32
- The id of a region.
- layerIdx Int32
- Index of a layer in the CompoundStructure. The layer index is zero based. It counts from the exterior of wall and from the top of roofs, floors and ceilings.

Exception | Condition |
---|---|
ArgumentException | It is not a valid region id. |
ArgumentOutOfRangeException | The layer index is out of range. |
InvalidOperationException | This operation is valid only for vertically compound structures. |
See Also